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15
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Troubleshooting
15 Troubleshooting
In this chapter
15.1 Overview: Troubleshooting
15.2 Precautions when troubleshooting
Installer reference guide
246
INFORMATION
This unit is a heating only model. Therefore, all references to cooling in this
document are NOT applicable.
15.1
Overview: Troubleshooting .................................................................................................................................................... 246
15.2
Precautions when troubleshooting........................................................................................................................................ 246
15.3
Solving problems based on symptoms................................................................................................................................... 247
15.3.1
Symptom: The unit is NOT heating or cooling as expected .................................................................................. 247
15.3.2
Symptom: Hot water does NOT reach the desired temperature ......................................................................... 248
15.3.3
Symptom: The compressor does NOT start (space heating or domestic water heating) .................................... 248
15.3.4
Symptom: The system is making gurgling noises after commissioning................................................................ 248
15.3.5
Symptom: The pump is blocked............................................................................................................................. 249
15.3.6
Symptom: The pump is making noise (cavitation) ................................................................................................ 250
15.3.7
Symptom: The pressure relief valve opens ........................................................................................................... 250
15.3.8
Symptom: The water pressure relief valve leaks................................................................................................... 250
15.3.9
Symptom: The space is NOT sufficiently heated at low outdoor temperatures .................................................. 251
15.3.10 Symptom: The pressure at the tapping point is temporarily unusually high ....................................................... 252
15.3.11 Symptom: Tank disinfection function is NOT completed correctly (AH-error) .................................................... 252
15.4
Solving problems based on error codes................................................................................................................................. 252
15.4.1
To display the help text in case of a malfunction.................................................................................................. 253
15.4.2
Error codes: Overview............................................................................................................................................ 253
This chapter describes what you have to do in case of problems.
It contains information about:
▪
Solving problems based on symptoms
▪
Solving problems based on error codes
Before troubleshooting
Carry out a thorough visual inspection of the unit and look for obvious defects such
as loose connections or defective wiring.
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING/SCALDING
ERLA11~16D + EBVZ16S18+23D
Daikin Altherma 3 R F
4P643604-1B - 2022.05
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